Bored by Scribble I have written an alternative handwriting for readers with sensor: PB PRO series 603, 903, 612, 622, 912.
You can draw with 5 types of thick lines - selectable in the palette vertically.
Colour (16 shades of gray) can be selected in the palette horizontally.
Black and white drawn faster than a semitone.
Files are automatically saved like "/My Pictures/pbdraw1.bmp".
The files will not be overwritten, after editing the new file is created.
You can choose and open previously saved file using the "next page" - "previous page" or by menu(3 and 4 buttons).
1-st button - New (without saving);
2 - to delete last opened file;
5 - the main freehand drawing mode;
6 - drawing lines by mark at the start and end points;
7 - "tonal brush" of five sizes with a given "color";
8 - filled square;
9 - one-level UNDO;
10 - close with saving.

You can edit the screenshots files. Put it to the folder "/ My Pictures" and rename the file to "pbdraw1.bmp" with the next available number in place of sequence.

version b5 for normal firmware without fast driver: pbdraw_b5.app
version b5 fo a firmware with a fast driver: pbdraw_fast_b5.app

thanks for this nice drawing program!
I've always found the scribble program to be quite restricted, especially drawing in grayscale or simply drawing straight lines is still not possible there and PB do not want to provide their sources for scribble so there was no chance to improve that program...

Do you have any plans to provide the sources (sourceforge or somewhere)? That would be really cool!